Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	$ 10,655	$ 7,267	$ 8,547	$ 7,337
Items Included in Net Income	45	854	712	943
Gains (Losses) in OCI and Other	(83)	195	(132)	284
Issuances, Sales, Maturities, Settlements, Calls, Net	673	(612)	1,160	(885)
Transfers Into or Out of Level 3, Net	(4,493)	(332)	(3,490)	(307)
Ending Fair Value	6,797	7,372	6,797	7,372
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	8,047	6,975	7,761	6,978
Items Included in Net Income	1	(7)	3	(6)
Gains (Losses) in OCI and Other	(87)	191	(139)	17
Issuances, Sales, Maturities, Settlements, Calls, Net	476	64	840	146
Transfers Into or Out of Level 3, Net	(25)	(16)	(53)	72
Ending Fair Value	8,412	7,207	8,412	7,207
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		5	5	5
Issuances, Sales, Maturities, Settlements, Calls, Net			(5)
Transfers Into or Out of Level 3, Net		(5)		(5)
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	43	86	74	90
Gains (Losses) in OCI and Other	(3)		(11)	(4)
Issuances, Sales, Maturities, Settlements, Calls, Net	66	(20)	80	(20)
Transfers Into or Out of Level 3, Net			(37)
Ending Fair Value	106	66	106	66
RMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	2	2	11
Transfers Into or Out of Level 3, Net			(1)	(9)
Ending Fair Value	1	2	1	2
CMBS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	9	1	1	1
Issuances, Sales, Maturities, Settlements, Calls, Net			8
Transfers Into or Out of Level 3, Net	(8)		(8)
Ending Fair Value	1	1	1	1
ABS [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	629	424	570	268
Items Included in Net Income			1
Gains (Losses) in OCI and Other	(1)	3	(5)	5
Issuances, Sales, Maturities, Settlements, Calls, Net	144	60	426	317
Transfers Into or Out of Level 3, Net	(38)	(74)	(258)	(177)
Ending Fair Value	734	413	734	413
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	100	90	103	78
Gains (Losses) in OCI and Other	5	1	16	(1)
Issuances, Sales, Maturities, Settlements, Calls, Net	(27)	13	(41)	9
Transfers Into or Out of Level 3, Net				18
Ending Fair Value	78	104	78	104
Trading Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	630	673	643	666
Items Included in Net Income	3	2	2	(2)
Issuances, Sales, Maturities, Settlements, Calls, Net	(33)	(119)	(31)	(139)
Transfers Into or Out of Level 3, Net		(21)	(14)	10
Ending Fair Value	600	535	600	535
Equity Securities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	79	29	57	30
Items Included in Net Income	5	2	31	1
Issuances, Sales, Maturities, Settlements, Calls, Net		18	(4)	18
Ending Fair Value	84	49	84	49
Mortgage Loans On Real Estate [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	818		832
Items Included in Net Income	4		10
Gains (Losses) in OCI and Other	3		7
Issuances, Sales, Maturities, Settlements, Calls, Net	(33)		(57)
Ending Fair Value	792		792
Derivative Investments [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1	595	1,542	868
Items Included in Net Income		958	1,249	555
Gains (Losses) in OCI and Other				267
Issuances, Sales, Maturities, Settlements, Calls, Net		(189)	(132)	(326)
Transfers Into or Out of Level 3, Net		(216)	(2,658)	(216)
Ending Fair Value	1	1,148	1	1,148
GLB Direct Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	1,767		450	450
Items Included in Net Income	(69)		1,248	(450)
Ending Fair Value	1,698		1,698
GLB Direct Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		(3,086)
Items Included in Net Income		1,980		(1,106)
Ending Fair Value		(1,106)		(1,106)
GLB Ceded Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	53	3,081	82	60
Items Included in Net Income	2	(1,976)	(27)	1,045
Ending Fair Value	55	1,105	55	1,105
GLB Ceded Embedded Derivatives [Member] | Other Liabilities [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	(1,816)		(531)	(510)
Items Included in Net Income	67		(1,218)	510
Ending Fair Value	(1,749)		(1,749)
Indexed Annuity Ceded Embedded Derivatives [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		664	550	927
Items Included in Net Income	(14)	295	17	484
Issuances, Sales, Maturities, Settlements, Calls, Net	(6)	(423)	(60)	(875)
Transfers Into or Out of Level 3, Net	515		(12)
Ending Fair Value	495	536	495	536
LPR Ceded Derivative [Member] | Other Assets [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value	294
Items Included in Net Income	(1)		(25)
Transfers Into or Out of Level 3, Net			318
Ending Fair Value	293		293
Indexed Annuity And IUL Contracts [Member] | Future Contract Benefits [Member]
Level 3 Unobservable Input Reconciliation
Beginning Fair Value		(2,272)	(3,594)	(2,585)
Items Included in Net Income	47	(400)	(579)	(88)
Issuances, Sales, Maturities, Settlements, Calls, Net	86	(16)	136	(15)
Transfers Into or Out of Level 3, Net	(4,937)		(767)
Ending Fair Value	$ (4,804)	$ (2,688)	$ (4,804)	$ (2,688)